Steel Vs Plastic Water Tanks - Which Is Better?

20 May.,2024

 

Steel Vs Plastic Water Tanks - Which Is Better?

While steel water tanks are more expensive than plastic tanks, they have a much higher capacity and are more durable than plastic tanks.

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Steel water tanks are perfect for customers who need to store anything from small sized tanks to much larger amounts of water. Steel tanks can hold up to 5 million litres of water, making them a better choice for irrigation, industrial and fire protection. They are more durable than plastic tanks, lasting 20+ years, due to them being resistant to the environment and the harsh African sun. Being a completely closed tank this prevent algae to grow in a steel water tank, making it a more hygienic choice, especially where for drinking water.

The wide range of sizes allows the tanks to be customized to fit the customers requirements. Compared to plastic rotor-moulded tanks which only come in specific sizes – 1 000 L, 5 000 L, 10 000 L, etc.

In summary, steel tanks are great for all uses, however budget wise they are more expensive.

Do Bolted Steel Tanks Last as Long as Welded ...

Bolted water tanks and welded steel tanks are both commonly used for storing potable water and other liquids. However, there are some differences between these two types of tanks, and each has its own advantages and disadvantages. 

 

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  1. Sealing: Bolted water tanks rely on gaskets and sealants to create a tight seal between the tank panels. Over time, these seals can wear out, and water can begin to leak from the tank. Welded steel tanks, on the other hand, are welded together to form a continuous, leak-proof structure.
  2. Assembly: Bolted water tanks require a significant amount of assembly on site, as each panel needs to be bolted together.  Welded steel tanks are fabricated off-site and transported to the installation location, then set on a foundation and welded together.
  3. Maintenance: Bolted water tanks require regular maintenance to ensure that the bolts remain tight and the gaskets and sealants are intact. Welded steel tanks, on the other hand, require less maintenance since there are no bolts or seals that can wear out over time.
  4. Corrosion: Bolted water tanks are typically made from coated steel panels, which can be susceptible to corrosion if the coating is damaged or compromised. Welded steel tanks are less susceptible to corrosion, since the steel is typically thicker and the welding process creates a more uniform structure.

Welded steel tanks are typically made from thicker steel plates and are fabricated off-site in a controlled environment, which can help ensure consistent quality and reduce the risk of defects. In addition, the welding process creates a continuous, leak-proof structure that is less prone to corrosion and other types of damage.

 

Bolted steel tanks, on the other hand, are assembled on-site from individual steel panels that are bolted together. While these tanks can be cost-effective and easier to transport and install, the bolted connections can be a potential source of leaks and corrosion over time.

 

In general, a well-designed and properly maintained welded steel tank can last up to a century, while a bolted steel tank may have a shorter lifespan of 20-30 years, depending on design and maintenance.  Overall, while bolted water tanks can be a cost-effective solution for storing water and other liquids, they will not be as durable or low-maintenance as welded steel tanks.  A High Performance Coating Consultant can help determine which tank type may be best suited for your project and put you in touch with a fabricator that specializes in water tanks.

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